Owner manual

5.5.3 CURVES
746 VA Trace Analyzer / 747 VA Stand
5-97
Softkeys Meaning
Calibr.
Display of the calibration curve and the mass concentration of the
substance calculated from it for the sample. The axes for standard
addition and calibration curve have the following meaning:
EV Evaluation value (current I, power P or time t)
ρρ
eff
Effective mass concentration of the selected sub-
stance in the measuring vessel
With the internal standard, the following axes are shown:
EV
a
/EV
r
Ratio of the evaluation values of analyte (a = analyte)
and reference substance (r = reference)
ρρ
a
/ρρ
r
Ratio of the effective mass concentrations of analyte
(a = analyte) and reference substance (r = refer-
ence) in the measuring vessel
The curve representation depends on the selected calibration tech-
nique Technique and the run mode Run mode:
• Standard addition (see also section 6.9.4):
ρρ
effeff
EV
std.add., determ.
Sample
Standard additions
– ± Standard deviation
(if available)
• Calibration curve (see also section 6.9.5):
ρρ
effeff
EV
cal.crv., calibr.
ρρ
effeff
EV
cal.crv., determ.
Calibration points
– ± Standard deviation
The measured value is
plotted.
• Internal standard (see also section 6.9.6):
ρρ
a a
//
ρρ
rr
EV
a
/EV
r
int.std., calibr. int.std., determ.
EV
a
/EV
r
ρρ
a a
//
ρρ
rr
Calibration points
– ± Deviation
The measured value is
plotted.
The results of the calibration are also shown for all curves (for details,
see under Coefficients on the "SUBSTANCES/Calibration" page,
section 5.6.3).